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KenDrill™ HP • Long • Internal Coolant • Straight Shank • Metric

Solid Carbide Step Drill for Steel and Cast Iron

Material Number4175438

ISO Catalog IDB732A06528HPANSI Catalog IDB732A06528HP

B732A_HP Long Holemaking - 4175438 - Kennametal

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P Steel
K Cast Iron
Counter Sinking/ Stroke Chamfering
Drilling
Tool Dimensions: 2flute/2margin/coolant
DIN number 6535
Drilling - Through Coolant
Through Coolant: MQL (Minimum Quantity Lubricant): Drilling
Shank - Cylindrical Plain ≤h6
Helix Angle: 30°

Overview
Application Data
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Compatible Parts Machine Side

Metric

Inch

Material Number	4175438
ISO Catalog ID	B732A06528HP
ANSI Catalog ID	B732A06528HP
Grade	KCPK15
[D1] Drill Diameter M	6.528 mm
[D1] Drill Diameter M	0.257 in
[L] Overall Length	89 mm
[L] Overall Length	3.5039 in
Length Cut Diameter [SDL1]	23.722 mm
[SDL1] Length Cut Diameter 1	0.934 in
[L3] Flute Length	40.9 mm
[L3] Flute Length	1.6102 in
[L4] Maximum Drilling Depth	25.5 mm
[L4] Maximum Drilling Depth	1.0039 in
[L5] Drill Point Length	1.225 mm
[L5] Drill Point Length	0.0482 in
[LS] Shank Length	40 mm
[LS] Shank Length	1.5748 in
[D] Adapter / Shank / Bore Diameter	10 mm
[D] Adapter / Shank / Bore Diameter	0.3937 in

See all Product Variants

Workpiece Materials

Steel
Cast Iron

Uses and application

Counter Sinking/ Stroke Chamfering
Drilling
Tool Dimensions: 2flute/2margin/coolant
DIN number 6535
Drilling - Through Coolant
Through Coolant: MQL (Minimum Quantity Lubricant): Drilling
Shank - Cylindrical Plain ≤h6
Helix Angle: 30°

Grades

KCPK15

Composition: Multilayered PVD TiN-TiAlN coated fine-grain carbide with superior surface finish.
Application: First choice for alloyed and high-alloyed steel and cast iron. A state-of-the-art surface condition enables superior chip evacuation and offers highest level of wear resistance at enhanced material removal rates.

Features and benefits

HP Beyond step drills with through coolant for steel and iron.
Application-specific SC drill that offers a one-pass solution in steels and irons in traditional tap sizes to reduce cycle time and increase productivity.
Drilling and chamfering in one shot.
HP point enables high feed rates by progressive rake angle.
KCPK15™ Beyond grade is a multilayer, TiAlN-based coating with high hot hardness that enables high cutting speeds, even in MQL applications.
The highly polished surface ensures superior chip evacuation even when low-pressure coolant is applied.

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Application Data

HP Step Drills • B73_HP Series • Grade KCPK15™ • Through Coolant • Drill Diameters 3–20mm • Metric

Material Group

Cutting Speed vc

Metric

Range m/min

Recommended Feed Rate (f) by Diameter

Min

Starting Value

Max

3,0

4,0

6,0

8,0

10,0

12,0

16,0

20,0

150

240

270

mm/r

0,06–0,14

0,08–0,18

0,09–0,20

0,12–0,26

0,14–0,30

0,15–0,33

0,17–0,39

0,20–0,43

140

220

240

mm/r

0,07–0,17

0,09–0,21

0,11–0,24

0,14–0,30

0,16–0,35

0,18–0,39

0,20–0,46

0,24–0,50

180

210

240

mm/r

0,07–0,14

0,09–0,17

0,11–0,20

0,14–0,24

0,16–0,28

0,18–0,32

0,20–0,37

0,24–0,43

120

150

180

mm/r

0,09–0,17

0,12–0,21

0,14–0,24

0,17–0,30

0,20–0,35

0,22–0,39

0,26–0,46

0,29–0,50

100

140

180

mm/r

0,08–0,17

0,11–0,20

0,12–0,23

0,15–0,28

0,17–0,33

0,19–0,37

0,22–0,43

0,25–0,45

110

mm/r

0,06–0,14

0,08–0,16

0,10–0,20

0,14–0,25

0,16–0,28

0,18–0,32

0,22–0,40

0,26–0,45

100

mm/r

0,06–0,14

0,08–0,16

0,10–0,20

0,14–0,25

0,16–0,28

0,18–0,32

0,22–0,40

0,26–0,45

140

160

180

mm/r

0,09–0,18

0,12–0,22

0,13–0,26

0,16–0,33

0,19–0,37

0,21–0,41

0,24–0,48

0,27–0,51

100

150

200

mm/r

0,09–0,16

0,12–0,19

0,13–0,22

0,16–0,27

0,19–0,32

0,21–0,35

0,24–0,41

0,27–0,45

100

140

180

mm/r

0,07–0,14

0,09–0,17

0,12–0,20

0,14–0,24

0,16–0,28

0,18–0,32

0,21–0,37

0,24–0,39

Material Group

Cutting Speed vc

Inch

Range SFM

Recommended Feed Rate (f) by Diameter

Min

Starting Value

Max

1/8 .125

3/16 .188

1/4 .250

5/16 .313

3/8 .375

1/2 .500

5/8 .625

3/4 .750

490

790

890

IPR

.002–.006

.003–.007

.004–.008

.005–.010

.006–.012

.006–.013

.007–.015

.008–.017

460

720

790

IPR

.003–.007

.004–.008

.004–.009

.006–.012

.006–.014

.007–.015

.008–.018

.009–.020

590

690

790

IPR

.003–.006

.004–.007

.004–.008

.006–.009

.006–.011

.007–.013

.008–.015

.009–.017

390

490

590

IPR

.004–.007

.005–.008

.006–.009

.007–.012

.008–.014

.009–.015

.010–.018

.011–.020

330

460

590

IPR

.003–.007

.004–.008

.005–.009

.006–.011

.007–.013

.008–.015

.009–.017

.010–.018

230

300

360

IPR

.002–.006

.003–.006

.004–.008

.006–.010

.006–.011

.007–.013

.009–.016

.010–.018

200

260

330

IPR

.002–.006

.003–.006

.004–.008

.006–.010

.006–.011

.007–.013

.009–.016

.010–.018

460

520

590

IPR

.004–.007

.005–.009

.005–.010

.006–.013

.008–.015

.008–.016

.009–.019

.011–.020

330

490

660

IPR

.004–.006

.005–.008

.005–.009

.006–.011

.008–.013

.008–.014

.009–.016

.011–.018

330

460

590

IPR

.003–.006

.004–.007

.005–.008

.006–.009

.006–.011

.007–.013

.008–.015

.009–.015

Cutting Speed vc

Metric

Range m/min

Recommended Feed Rate (f) by Diameter

Material Group

Min

Starting Value

Max

3,0

4,0

6,0

8,0

10,0

12,0

16,0

20,0

150

240

270

mm/r

0,06–0,14

0,08–0,18

0,09–0,20

0,12–0,26

0,14–0,30

0,15–0,33

0,17–0,39

0,20–0,43

140

220

240

mm/r

0,07–0,17

0,09–0,21

0,11–0,24

0,14–0,30

0,16–0,35

0,18–0,39

0,20–0,46

0,24–0,50

180

210

240

mm/r

0,07–0,14

0,09–0,17

0,11–0,20

0,14–0,24

0,16–0,28

0,18–0,32

0,20–0,37

0,24–0,43

120

150

180

mm/r

0,09–0,17

0,12–0,21

0,14–0,24

0,17–0,30

0,20–0,35

0,22–0,39

0,26–0,46

0,29–0,50

100

140

180

mm/r

0,08–0,17

0,11–0,20

0,12–0,23

0,15–0,28

0,17–0,33

0,19–0,37

0,22–0,43

0,25–0,45

110

mm/r

0,06–0,14

0,08–0,16

0,10–0,20

0,14–0,25

0,16–0,28

0,18–0,32

0,22–0,40

0,26–0,45

100

mm/r

0,06–0,14

0,08–0,16

0,10–0,20

0,14–0,25

0,16–0,28

0,18–0,32

0,22–0,40

0,26–0,45

140

160

180

mm/r

0,09–0,18

0,12–0,22

0,13–0,26

0,16–0,33

0,19–0,37

0,21–0,41

0,24–0,48

0,27–0,51

100

150

200

mm/r

0,09–0,16

0,12–0,19

0,13–0,22

0,16–0,27

0,19–0,32

0,21–0,35

0,24–0,41

0,27–0,45

100

140

180

mm/r

0,07–0,14

0,09–0,17

0,12–0,20

0,14–0,24

0,16–0,28

0,18–0,32

0,21–0,37

0,24–0,39

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Tolerance

Tolerance • Metric
nominal size range	D1 tolerance m7	D tolerance h6
3–6	0,004/0,016	0,000/-0,008
6–10	0,006/0,021	0,000/-0,009
10–18	0,007/0,025	0,000/-0,011
18–25,4	0,008/0,029	0,000/-0,013

Tolerance • Inch
nominal size range	D1 tolerance m7	D tolerance h6
.1181 to .2362	.0002/.0006	.0000/-.0003
.2362 to .3937	.0002/.0008	.0000/-.0004
.3937 to .7087	.0003/.0010	.0000/-.0004
.7087 to 1.0000	.0003/.0011	.0000/-.0005

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Product data

SDS

Safety Data Sheets

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Product Name

Material Number

ISO Catalog ID

ANSI Catalog ID

DA Collets

1014093

100DA100M

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/each

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DA Collets

1014177

100DA105M

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DA Collets

1014248

200DA100M

List Price

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DA Collets

1014435

180DA100M

List Price

/each

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Qty

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DA Collets

1014479

180DA105M

List Price

/each

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Qty

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TG75 Series • Metric

1014533

75TG100M

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Qty

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TG100 Series • Metric

1014703

100TG100M

List Price

/each

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/each

Qty

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ER Standard Collets • Metric

1025840

20ER100M

List Price

/each

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/each

Qty

In StockThis item is no longer availableLonger Delivery

ER Standard Collets • Metric

1025841

20ER110M

List Price

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Qty

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Product Similar To :

KenDrill™ HP • Long • Internal Coolant • Straight Shank • Metric

Solid Carbide Step Drill for Steel and Cast Iron

Material Number4175438

ISO Catalog IDB732A06528HPANSI Catalog IDB732A06528HP

Workpiece Materials

Uses and application

Features and benefits

Application Data

HP Step Drills • B73_HP Series • Grade KCPK15™ • Through Coolant • Drill Diameters 3–20mm • Metric

Tolerance

Product Suggestions

Product Family suggestions

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Call (833) 893-1514

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Product Similar To :

KenDrill™ HP • Long • Internal Coolant • Straight Shank • Metric

Solid Carbide Step Drill for Steel and Cast Iron

Material Number4175438

ISO Catalog IDB732A06528HPANSI Catalog IDB732A06528HP

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Workpiece Materials

Uses and application

Features and benefits

Application Data

HP Step Drills • B73_HP Series • Grade KCPK15™ • Through Coolant • Drill Diameters 3–20mm • Metric

Tolerance

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